From the Manufacturer POWERTEC High Speed Steel (HSS) Knives are made of premium High Speed Steel (HSS) with performance that meets or exceeds OEM product. New shop fox W1814 - 2 hp 6 benchtop jointer ( in box The final Heat Treatment enhances the hardness and durability. 6 Inch Jointer Blades POWERTEC 6-Inch HSS - Replacement Blades For Performax 90237, Set Of 2 Performax Replacement Jointer Knives POWERTEC High Speed Steel (HSS) Knives stay sharp and last longer than conventional product. We guarantee that POWERTEC High Speed Steel (HSS) Knives meet or exceed OEM quality and industrial standard. Shop Fox W1829 Benchtop Jointer, 6-Inch POWERTE 148032 Replaement 6-Inh HSS Jointer Knives for Delta 37-658...